Temporary binder.



w. s. MENDENHALL. TEMPORARY BINDER.

APPLICATION IIL ED JULY 29, 190-7.

Patented Apr, 20, 1909.

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. UNITED srnrns PATENT OFFICE.

WALTER S. MENDENHALL, OF'OINOINNATI, OHIO, ASSIGNOR TO THE SAMUEL O. TATUM COMPANY, OF CINCINNATI, OHIO, A CORPORATION.

TEMPORARY BINDER.

Specification of Letters Patent.

Application filed July 29,1907.

Patented April 20, 1909.

Serial No. 386,110.

The object of the invention is to provide a simple lock for the upper cover.

The features of the invention are more fully set forth in the description of the acprovided with posts, a top binding strip companying drawings, forming a part of this specification, in which:

Figure 1 is a central longitudinal section, partly in elevation, illustrating the locking member in the locked position against the posts. Fig. 2 is a similar view with the post in released position. Fig. 3 is a section on line at, ac, Fig. 2.

1 is the bottom cover, having the binding strip 2, and 3 the top cover, having the binding strip 4. 5, 6, represent the posts secured to the strip 2. The strip 4 is provided With orifices through which the posts 5, 6, pass.

9, 10, represent lock pieces having guide slots 1 1 engaging over the pins 12 in the strip 4. The strip 4 is a hollow frame within which the locking pieces slide. The locking pieces are provided with 'V-notches 13, forming an inclined Wedge surface .16 adapted to engage the posts 5, 6; The pieces 9, 10, are provided with screw threaded sleeve portions 14 which engage with right and left screw threads of the rod 15. Thus it will be seen in moving the lock pieces toward their respective posts they will form a wedge between the posts-and inside of the casing, making a very rigid friction lock between the parts. This rod has a socket end 16 exposed at one end of the strip 4 and adapted to be turned by a key to o erate the look. It is obvious that when t is rod is turned the lock pieces are simultaneously operated to engage and disengage the binding strips, and that a slight turn is suilicient to give a strong wedge-like clamping engagement.

Having described my invention, I claim In a temporary binder, a binding strip formed of an oval shaped tube, provided with orifices through which said posts project, lock pieces between said posts, having their opposite edges bearing against the side wall of the tube, means for limiting the movement of said lock pieces, comprising slots formed in the lock pieces, and pins secured to the tube, passing through said slots, V-shaped notches in said lock pieces, providing wedges adapted to be engaged between said posts and side wall of the tube,

and a rod having a right and left hand screw thread engaging said lock pieces for simultaneously operating the same, substantially as described. 1

In testimony whereof I have hereunto set my hand.

'WALTER S. MENDENHALL.

" Witnesses:

OLIVER B. KAISER,

LEO ODoNNELL. 

